wolfram
— Noun
– English
~ a heavy grey-white metallic element; the pure form is used mainly in electrical applications; it is found in several ores including wolframite and scheelite
wolfram steel
— Noun
– English
~ a very hard heat-resistant steel containing tungsten
wolframite
— Noun
– English
~ a mineral consisting of iron and manganese tungstate in crystalline form; the principal ore of tungsten; found in quartz veins associated with granitic rocks